Discomedusae - AbsoluteAstronomy.com

Discomedusae is a taxonomic group (subclass of the Scyphozoa) of jellyfish

Jellyfish

Jellyfish are free-swimming members of the phylum Cnidaria. Medusa is another word for jellyfish, and refers to any free-swimming jellyfish stages in the phylum Cnidaria...

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